Closure fasteners – Seals – Driving
Patent
1988-09-30
1989-12-05
Moore, Richard E.
Closure fasteners
Seals
Driving
292201, 247067, 24707, 247065, 247041, B65D 3334
Patent
active
048848336
ABSTRACT:
A locking device of the type, which preferably is intended for releasable attaching a plastic wafer to goods providing security against the theft thereof, comprises a locking mechanism mounted in a house (3). which is intended to be attached to the wafer, and a pin (2), which is intended to cooperate with the locking mechanism. To produce such a locking device, which prevent damage of the article, through which the pin passes, and which gives sufficient resistance against removal of the pin, and which is simple to make with better security against non-authorized release, the locking device is characterized in that the locking mechanism comprises two locking plates (6a,6b) each having a long side (11a,11b) adjacent each other, each adjacent long side is provided with a centrally placed recess (12a,12b) for engagement with the shaft (8) of the pin (2). Furthermore, an inner house part (5) provides inclined planes (16a,16b) directed symmetrical against the center line of the house, separation means in the form of flaps (17) provided at the center line of the house and shaped to separate the locking plates (6a,6b), when these abut against the inclined planes (16a,16b) in their position for release of the pin (2). Moreover, the locking mechanism comprises spring means (7) biasing the locking plates (6a,6b) against their position for locking the pin.
A preferred embodiment for the locking device comprises a resilient airtight membrane (20), which is placed immediate above the locking plates (6a,6b). Hereby, a non-authorized release of the pin will be particularly difficult.
REFERENCES:
patent: 1054431 (1913-02-01), Mangold
patent: 1190362 (1916-07-01), Aanerud
patent: 1930560 (1933-10-01), Keidel
patent: 2028423 (1936-01-01), Upham
patent: 2713707 (1955-07-01), Libby
patent: 3244444 (1966-04-01), Bisbing
patent: 4156302 (1979-05-01), Van Niel
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